.travis.yml in asset_symlink-0.3.1 vs .travis.yml in asset_symlink-0.3.2

@@ -1,12 +1,23 @@
 language: ruby
-rvm:
-  - 2.4.6
-  - 2.5.5
 install: bundle install
-gemfile:
-  - gemfiles/4.2.10.gemfile
-  - gemfiles/5.0.gemfile
-  - gemfiles/5.1.gemfile
-  - gemfiles/5.2.gemfile
-
-script: "bundle exec rake spec"
\ No newline at end of file
+rvm:
+  - 2.4
+  - 2.5
+  - 2.6
+matrix:
+  exclude:
+  - rvm: 2.4
+    gemfile: gemfiles/6.0.gemfile
+  - rvm: 2.6
+    gemfile: gemfiles/4.2.10.gemfile
+  - rvm: 2.6
+    gemfile: gemfiles/5.1.gemfile
+  - rvm: 2.6
+    gemfile: gemfiles/5.0.gemfile
+gemfiles:
+- gemfiles/6.0.gemfile
+- gemfiles/4.2.10.gemfile
+- gemfiles/5.1.gemfile
+- gemfiles/5.2.gemfile
+- gemfiles/5.0.gemfile
+script: "bundle exec rake spec"